Corrugating-machine.



F. D. STOWE.

CORRUGATING MACHINE.

APPLICATION r1110 FEB. 26. 1914.

Patented June 6, 1916.

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F. D. STOWE.

CORBUGATING MACHINE.

APPLICATION FILED FEB. 26. 1914.

Patented June 6, 1916.

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F. D. STOWE.

CORRUGATING MACHINE.

APPLICATION FILED FEB. 26. I9I-I.

1,186,145. Patented June 6,1916.

3 SHEETS-SHEETS- fll: coLUllllA PLANOOMPH 120., WASHINGTON, D. c.

UNITED STATES PATENT OFFICE.

FLOYD D. STOWE, OF WILMINGTON, "DELAWARE, ASSIG'NOR '10 I. DU FONT DENEMOURS POWDER "COMPANY, OF WILMINGTON, DEL-AWARE, A C ORPORA- TION OFNEW JERSEY.

CORRUGATING-MLACHINE.

Specification of Letters Patent.

Patented June 6, 1916.

Application filed February 26, 1914. Serial N 0. 821,229.

To all whom it may concern Be it known that I, FLoYD D. SToWE, ofIVilmington, in the county of New Castle, and in the State of Delaware,have invented a. certain new and useful Improvement inCorrugating-Machines, and do hereby declare that the following is afull, clear, and exact description thereof.

My invention relates particularly to machines adapted to corrugatecurved surfaces and especially cylindrical objects of sheet metal,although it is applicable also to many other uses.

My invention is especially useful in connection with the production ofpowder kegs made out of sheet iron. Hitherto corrugating machines forcorrugating cylindrical blanks made from sheet metal have been thesource of numerous accidents to the operatorsof the machines owing tothe fact that it was necessary to begin the corrugating operation whilethe blank is grasped in the hand of the operator. In such machines thecylindrical blank begins to turn while in the hand of the operator sothat the sharp edges of the blank consequently cut the hands of theoperator. Furthermore, such machines have been constructed so that theguide rollers cooperating with the corrugating rolls have been locatedoutside of the cylindrical blank so that when the blank begins to rotatethere is a tendency for the crimped edges of the cylindrical blank tobecome disengaged thereby separating the ends of the blank of sheetmetal out of which the cylindrical blank has been made.

The object of my invention is to provide a corrugating machine whichwill automatically feed the blank into its proper position for thecorrugating operations of the machine and particularly before thecorrugating operations begin.

A further object of my invention is to provide a corrugating machine inwhich, while the cylindrical. blanks having crimped edges are beingoperated upon, the corrugating operations will tend to maintain thecrimped edges together instead of forcing them apart as in the case ofprevious machines used for corrugating.

lVhile my invention is capable of embodiment in many different forms forthe purpose of illustration I have shown only one form thereof intheaccompanying drawings, in which, Figure'l is a front elevation of a'corrugat mg machine made in accordance with my invention; Fig. 2 is a'side elevation thereof; Fig. 3 is a plan view thereof; and Fig. 4 is aside elevation of a detail taken on the opposite side to the view shownin Fig.2.

In the drawings I have shown a main frame 1 adapted to'rest uponthe'fioor. To the top 'of'this main frame 1 there is secured a pair-ofuprights :2 by means of bolts 3. These uprights 2 are formed at the topwith journal bearings Ito receive a shaft '5, carrying at its center apulley .6 between the two uprights 2, and at its ends two corrugatingrolls 7 and 8. The blank is first corrugated at one end on the roll 7,and then corrugated at the other end on roll '8. The corrugating rolls 7and 8 are maintained in position by means of collars 9 which are securedto the shaft 5 by screws 10. Beneath the lower "corrugating roll 7 thereis a rod 11 which is screwed into one of the uprights 2, which rod 11carries an inner arm 12, the end of which has a slot 13'to adjustablyreceive a stud shaft 14 carrying an inner guide roll '15. The stud shaft14 is maintained in its position of adjustment by a nut 16. The

rod 11 also carries an outer bracket 17 having in its end a slot 18 toreceive a stud shaft 19 carrying an outer guide roll '20. The stud shaft19 is maintained in its adjusted position by a nut 21. Both the guiderolls 15 and 20 are so located that when cylindrical blank 22 is placedover thecorrugating roll 7 and the guide rolls 1'5 and 2O, the blank 22.will be rotated in a spiral manner toward the inner end of the roll 7.There is also provided upon the rod 11a middle arm 22 carrying a middle"guideroll 22* on a stud shaft 22, and which is secured in place by anut 22 This middle guide roll 22 is provided only at the right side ofthe machine to give greater stiffness to the blank in the initialcorrugating operation. After one end of the blank is corrugated, thismiddle roll is not needed when the blank is being finally corrugated onroll 8. When the blank 22 has been moved in this manner to the inner endof the corrugating roll 7 it contacts with a U-shaped plate '23 which issecured to the uprights 2 by means of screws 24: in such a manner thatit may be readily removed and replaced when worn by contact with theblank. Said plat 23 carries a top guide roll 25 on a stud shaft 26secured in position by a nut 27. On the other side of the machine thereis provided an inner guide roll 28, an outer guide roll 29, and a topguide roll 30, which are supported upon a rod 31 and a plate 32 in amanner similar to the corresponding rolls on the other side of themachine. Each of the uprights 2 has at its rear an upward extension 33to receive a shaft 34 carried by a lever arm The lever arm 35 at itsfront end projects over the top of the lower corrugating rolls 7 and 8,and is provided at this point with down wardly directed arms 36, whichhave journal bearings 37 to receive two shafts 38 and 39, carryingrespectively upper corrugating rolls a0 and %1. At its rear the leverarm 35 has a screw threaded link as adjustably connected to the top of aweight by means of a nut stat. The weight as at its lower end is pivotedto a bell crank lever e25 pivotally supported in the main frame 1. Theremaining arm of the bell crank lever 4:5 is connected. by a link 4L6 toan arm 47, forming part of a foot treadle 48 which is also pivotallysupported in the main frame 1.

In the operation of the machine the pulley 6 is continually driven fromany suitable source of power. This drives the lower corrugating rolls 7and 8. The weight 13 will normally withdraw the upper corrugating rolls4:0 and 41 so as to move the same out of contact with the lowercorrugating rolls 7 and 8. The operator now takes a cylindrical blank ineach hand, such for example as the blank 22 having crimped edges, asshown in the drawings, and places these two blanks over the corrugatingrolls 7 and 8. The blank applied to the corrugating roll 7 at the rightof the machine is an uncorrugated blank, while the blank applied to theroll 8 at the left of the machine has already had one end corrugated andis placed over the roll 8 so as to corrugate its other end. When theblanks 22 are thus placed over the rolls 7 and 8, the positions of thevarious guide'rolls will cause the blanks to occupy positions slightlyinclined to the axis of the rolls 7 and 8, with the outer ends of theblanks slightly nearer to the position of the operator than the innerends thereof. The rotation of the rolls 7 and 8 in the direction of thearrows, in cooperation with the inner and outer guide rolls 15, 20, 28and 29, will therefore cause the blanks 22 to be fed inwardly againstthe plates 23 and 32. The operator thereupon presses the treadle 18thereby bringing the upper corrugating rolls LO and 41 into cooperationwith the lower corrugating rolls 7 and 8, thus producing circularcorrugations around the sur faces of the blanks 22. During thecorrugation the inner and outer guide rolls 15, 20, 28 and 29 will tendto exert pressure upon the interior of the blanks thus distending themand maintaining the crimped edges of the cylindrical blank togetherduring the crimping operation. The operation of corrugating the blanksis quickly finished, after which the treadle 48 is released, therebycausing the weight 43 to withdraw the up per corrugating rolls 40 and 41out of contact with the corrugating blanks. The blanks can now beremoved by the operator and sent forward for the subsequent operationsto which the blank may be subjected.

While I have described my invention above in detail, I wish it to beunderstood that many changes may be made therein without departing fromthe spirit of my invention.

I claim:

1. In combination, a pair of corrugating rollers adapted to produceparallel grooves in planes at right angles to the axis of a cylinder andmeans for guiding a blank at an angle to the axis of one of thecorrugating rollers.

2. In combination, a pair of corrugating rollers adapted to produceparallel grooves in planes at right angles to the axis of a cylinder anda. guide roll for guiding a blank at an angle to the axis of one of thecorrugating rollers.

3. In combination, a pair of corrugating rollers adapted to produceparallel grooves in planes at right angles to the axis of a cylinder anda guide roll on each side of one of the corrugating rollers for guidinga blank at an angle to the axis of said corrugating roller.

4:. In combination, a pair of corrugating rollers adapted to produceparallel grooves in planes at right angles to the axis of a cylinder anda guide roll on each side of one of the corrugating rollers for guidinga blank at an angle to the axis of said corrugating roller, the guiderollers being located at the opposite ends of the corrugating' roller.

5. In combination, a pair of corrugating rollers adapted to produceparallel grooves in planes at right angles to the axis of a cylinder, aroll on each side of one of the corrugating rollers for guiding a blankat an angle to the axis of said corrugating roller, and a guide rolllocated on the oppositle1 side of the blank from the other guide ro s.

6. In combination, a pair of corrugating rollers adapted to produceparallel grooves in planes at right angles to the axis of a cylinder, aguide roll on each side of one of the corrugating rollers for guiding ablank at an angle to the axis of said corrugating roller, the guiderollers being located. at the opposite ends of the corrugating roller,and

a guide roll located on the opposite side of the blank from the otherguide rolls.

7. In combination, a pair of corrugating rollers adapted to produceparallel grooves in planes at right angles to the axis of a cylinder,means for guiding a blank at an angle to the axis of one of thecorrugating rollers, and a removable plate against which the blank isfed by the angular guiding means.

8. In combination, a pair of corrugating rollers adapted to produceparallel grooves in planes at right angles to the axis of a cylinder, aguide roll for guiding a blank at anangle to the axis of one of thecorrugating rollers, and a removable plate against which the blank isfed by the angular guiding means.

9. In combination, a pair of corrugating rollers adapted to produceparallel grooves in planes at right angles to the axis of a cylinder, aguide roll on each side of one of the corrugating rollers for guiding ablank at an angle to the axis of said corrugating roller, and aremovable plate against which the blank is fed by the angular guidingmeans.

10. In combination, a pair of corrugating rollers adapted to produceparallel grooves in planes at right angles to the axis of a cylinder, aguide roll on each side of one of the corrugating rollers for guiding ablank at an angle to the axis of said corrugating roller, the guiderollers being located at the opposite ends of the corrugating roller,and a removable plate against Which the blank is fed by the angularguiding means.

11. In combination, a pair of corrugating rollers adapted to produceparallel grooves in planes at right angles to the axis of a cylinder, aguide roll on each side of one of the corrugating rollers for guiding ablank at an angle to the axis of said corrugating roller, a guide rolllocated on the opposite side of the blank from the other guide rolls,and a removable plate against which the blank is fed by the angularguiding means.

12. In combination, a pair of corrugating rollers adapted to produceparallel grooves in planes at right angles to the axis of a cylinder, aguide roll on each side of one of the corrugating rollers for guiding acopies of this patent may be obtained for five cents each, by addressingthe blank at an angle tovthe axis of said corrugating roller, the guiderollers being located at the opposite ends of the corrugating roller, aguide roll located on the opposite side of the blank from the otherguide rolls, and a removable plate against Which the blank is fed by theangular guiding means.

13. In combination, a pair of corrugating rollers for corrugating acylindrical blank, and a pair of guide rolls located on the interior ofthe blank and at opposite ends of the corrugating rollers.

14%. In combination, a pair of corrugating rollers for corrugating acylindrical blank, a pair of guide rolls located on the interior of theblank and at opposite ends of the corrugating rollers, and a guide rolllocated on the outside of the blank.

15. In combination, a pair of corrugating rollers adapted to produceparallel grooves in planes at right angles to the axis of a cylinder forcorrugating a cylindrical blank, and a guide roll located on theinterior of the blank for guiding the blank at an angle to one of thecorrugating rolls.

16. In combination, a. pair of corrugating rollers for corrugating acylindrical blank, and a pair of guide rolls located on the interior ofthe blank for guiding the blank at an angle to one of the corrugatingrolls and at opposite ends of the corrugating rollers.

17. In combination, a pair of corrugating rollers for corrugating acylindrical blank, a guide roll located on the interior of the' blankfor guiding the blank at an angle to one of the corrugating rolls, and aguide roll located on the outside of the blank.

18. In combination, a pair of corrugating rollers for corrugating acylindrical blank, a pair of guide rolls located on the interior of theblank for guiding the blank at an angle to one of the corrugating rollsand at opposite ends of the corrugating rollers, and a guide rolllocated on the outside of the blank.

In testimony that I claim the have hereunto set my hand.

FLOYD D. STOWE.

foregoing I WVitnesses ARTHUR I/VRIGHT, L. BRODERIGK.

Washington, D. G.

